Ummmm i doubt it, I had a plant about a month and half old, and i noticed purple lines onn the main stme forming, from one node to the other, the purple petoiles of the gaurd leaves triggered it, i thought it was just the gaurd leaves taking there toll, finishing there cycle rdy to be cut off, but one day i poked my head in the room and right where those black lines were it swelled up and dropped over, it was weird, anyways, im not sure if this is your case exactly, but what you explained to me in your first message is what was going on for that plant, before it gave in..
good luck.
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